W-MCM-41的合成表征及其吸附氧化燃油脱硫的研究.doc

文档介绍：
W-MCM-41 的合成表征及其吸附氧化燃油
脱硫的研究#
丁文静1,吴沛文1,张铭2,朱文帅1,李华明1**
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(1. 江苏大学化学化工学院,镇江,212013;
2. 江苏大学能源与动力工程学院,镇江,212013)
摘要:实验中一步法合成了一系列含 W 的介孔分子筛 W-MCM-41,对其进行了 Raman,IR,
BET 表征,并研究了催化剂的构效关系。实验以二苯并噻吩(DBT)作为模型化合物,研究
了吸附耦合催化氧化脱硫体系的脱硫效果。反应过程中,W-MCM-41 既能吸附有机硫化物
又能催化 H2O2 氧化有机硫化物,且反应过程中不需要其它有机溶剂。实验结果表明,在最
优条件下(催化剂用量为 g,O/S= ,60 ℃),30min 内可以将 500 ppm DBT 完全脱
除,能达到深度脱硫的目的。对于其它几种含硫化合物(BT,4,6-DMDBT,DT)也有很好
的脱除效果。循环实验表明 W-MCM-41-10–H2O2脱硫体系循环使用 9 次后,脱硫率没有明
显的降低,脱硫率仍有 90%。
关键词:石油化学工程;脱硫;W-MCM-41;吸附;催化氧化
中图分类号:TQ9
Synthesis and Characterization of W-MCM-41 for
Absorption Oxidation Desulfurization of Fuels
DING Wenjing1, WU Peiwen1, ZHANG Ming2, ZHU Wenshuai1, LI Huaming1
(1. School of chemistry and chemical engineering, Jiangsu University, 212013;
2. School of energy and power engineering, Jiangsu University, 212013)
Abstract: W-containing mesoporous molecular sieve W-MCM-41 was prepared with a one-pot
method and characterized by Raman, IR and BET as well as the structure-activity relationship.
The oxidation of dibenzothiophene (DBT) in model oil was studied in the adsorptive and catalytic
oxidative desulfurization system at room temperature. In this process, W-MCM-41 can not only
adsorb anic S-pounds but also catalyze H2O2 to oxidize them, and no
organic solvent was added. The results demonstrated that 500 ppm DBT could be entirel